# Driver Circuit for 10W LED [closed]

I need to understand the 10w led driver circuit shown in image.

## closed as unclear what you're asking by winny, Bimpelrekkie, RoyC, pipe, BortNov 5 '18 at 18:55

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• what do you mean by understand ? ..... that is a horrible schematic, by the way .... where did that come from? – jsotola Nov 1 '18 at 6:52
• I got that from web, I am unable to understand that why npn transistor is used there? – Shreedhar Katwe Nov 1 '18 at 7:42
• it looks like someone on the internet just adjusted things until they got the result they wanted. They could have got the same result with a single resistor – Jasen Nov 1 '18 at 8:51